£10m coins and £3m dresses: The 10 most expensive collectibles in the world

The “Flowing Hair” silver dollar coin was bought by a collector for $10 million in 2013 and is believed to be the first US dollar ever minted.

The coin, which went on display in Britain for the first time earlier this year, was one of 1,758 silver dollars struck on October 15, 1794, on a hand-turned screw press at the Philadelphia Mint. Many experts even believe it is the first American coin ever struck.